Robust finite-time fault-tolerant control for networked control systems with random delays: A Markovian jump system approach

被引:44
作者
Bahreini, Mohsen [1 ]
Zarei, Jafar [1 ]
机构
[1] Shiraz Univ Technol, Dept Elect & Elect Engn, Shiraz, Iran
关键词
Networked control systems; Random delays; Markovian jump systems; Robust fault-tolerant control; Finite-time stochastic stability; H-INFINITY CONTROL; OUTPUT-FEEDBACK STABILIZATION; LINEAR-SYSTEMS; STOCHASTIC STABILITY; DESIGN;
D O I
10.1016/j.nahs.2020.100873
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, the problems of robust finite-time fault-tolerant stochastic stability and stabilization of networked control systems (NCSs) in the presence of random delays and actuator faults are investigated. First, sensor-to-controller and controller-to-actuator random delays are modeled as a Markov chain. Since in the network environment, the accurate access to the transition probabilities (TPs) of Markov chain is hard or even impossible, TPs information is limited. Then, by considering actuator fault indicator matrix and employing the state augmentation technique, the resulting closed-loop system is transformed into a Markovian jump system (MJS). Based on this model, the sufficient conditions are developed to ensure the finite-time fault-tolerant stochastic stability of the faulty NCS, and the fault-tolerant controllers are designed by solving a feasibility problem in terms of linear matrix inequalities (LMIs). The effectiveness of the proposed approach is illustrated during the simulation of a numerical example. Moreover, the faulty behavior of a continuous-stirred tank reactor (CSTR) is investigated and the applicability of the proposed method is demonstrated. (c) 2020 Elsevier Ltd. All rights reserved.
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页数:14
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